Book-stack.



PATENTED JAN. 31, 1905.

F. 0. HANSON.

BOOK STACK. APPLIOATIOH FILED AUG. 26, 1904.

2 SHEETS-SHEET 1.

No."781,060 PATENTED JAN.31,,1905.'

F. 0. HANSON.

BOOK STACK.

APPLICATION FILED AUG. 26, 1904.

2 SHEETS-SHEET 2.

Patented January 31, 1905.

PATENT OFFI E.

EEANo s o. HANSON, OF CHICAGO, ILLINOIS.

BOOK-STACK.

SPECIFICATION forming part of Letters Patent No. 781,060, dated January31 1905.

/ Application filed August 26, 1904.. Seria1No.222,203.

To all whom it may concern:

Be it known that l, FRANoIsO. HANSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certainnew and useful Improvements in Book-Stacks, of which thefollowing is a full, clear, and exact specification.

My invention relates more particularly to metallic book stacks or cases;and it has for its object to provide a durable, simple, and inexpensiveconstruction of book stack or case which shall possess a wide range ofadjustment.

With the described ends in view the invention consists in certainfeatures of novelty,

which will be hereinafter described, with reference to the accompanyingdrawings, and

- the base and the lowermost shelf.

more particularly pointed out in the claims.

In the said drawings, Figure 1 is a perspec tive View of my improvedbook stack or case. Fig. Q'is an enlarged detail perspective view of oneof the shelves broken away. Fig. 3 is an enlarged detail verticalsection of a part of Fig. 4 is a detail front elevation, partly invertical section, showing two shelves on each side of a partition. Fig.5is a vertical transverse section thereof on the line 55, Fig. 4. Fig. 6is a plan section on the line 6 6, Fig. 4. Fig. 7 is a detail plansection on the line 7 7;, Fig. 5.

Fig. 8 is a detail perspective view of one of the shelf lugsor'supports. Fig. 9 is a crosssection thereof on the line 9 9, Fig. 8,also showing the partition-wall; and Fig. 10 is a detail perspectiveView of one ofthe partition walls or plates detached.

The shelves on which the books rest are preferably composed of a sheetor plate 1 of thin metal, having their outer edges turned downwardly andcurled, as shown at 2, to give them finish and longitudinal rigidity,and their inner edges are also preferably stiflened by means ofdepending flanges 3. These shelves are supported at each end by means offlanges or ledges 4, oneof which is shown in detail in perspective inFig. 8 and all of which are formed with lugs or hooks 5, one at eachend,

projecting downwardly therefrom, and one or more depending lips 6, whichare arranged parallel with the hooks or lugs 5, but at a slight distancetherefrom. The hooks or lugs 5 are adapted to be inserted in pairedapertures 7, formed in vertical end walls or partition-plates 8 9 andengaging against the inner face thereof in the manner clearly shown inFigs. 4 and 9, while the lip 6 bears against the outer face of the endwall or partitionplate and holds the flange 4 from being depressed,while the lugs 5 prevent it from pulling out or moving laterally, thespace between it will be seen that the shelves 1 will have a wide rangeof adjustment and their positions may be readily altered by shifting thelugs 5 from one pair of holes to another. As shown in Fig. 5, the curl 2engages over one end of the flange 4, while Ithe'depending flange 3engages over the other end of the flange 4, and thus the shelf is heldagainst being pulled out or pushed inshould its weight and the weight ofthe books thereon not be sufficient to prevent such movement.

The partitions between the ends of the shelvesv are constituted by theaforesaid partition-plates 8 9 and T-bars 10 11, which are duplicates ofone another and arranged with their stems turned inwardly between theplates 8 9 and their cross-bars arranged against the outer edges of saidplates and constituting facings for the finishing-strips for thepartitions, the cross-bars being preferably substantially the same inlength as the distance between the outer faces of the partition-plates,

and the partition-plates are secured to the stems of the Ts by rivets 12or othersuitable means, but preferably by rivets, which are countersunkin the outer faces of plates 8 9, as better shown in Fig. 7, and theinner faces of the plates 8 9 are upset or distorted to form bosses 13where these countersinks are located and which serve as spacers formaking up the difference in width of the cross-bar of the T and thecombined thickness of the partitionplates and stem of the T. It is ofcourse evident that the partition-plates 8 9 might be brought in directcontact with the stem of the T; but that would not-leave room betweenthe plates for the lugs 5.

Havingthus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

1. In a book-stack the combination of the shelves, partitions thereforconstituting end walls and each comprising two apertured plates arrangedface to face with a space between them, a T-bar having its stem arrangedbetween said plates and its head or cross-bar arranged at the edges ofsaid plates and means passing through said plates and the stem of theT-bar for securing the plates and T-bar together, and shelf-supportingflanges having lugs engaging in said apertures.

2. In a book-stack the combination of the shelves, partitions thereforconstituting end walls and each comprising two apertured plates arrangedface to face with a space between them and having bosses struck inwardlytherefrom to constitute spacers therefor, a T- bar arranged at the edgesof said plates and having its stem located betwcen said bosses, andmeans passing through said bosses and stem for securing the T-bar andplates together, and a shelf-supporting means engaging in saidapertures.

FRANCIS O. HANSON.

Witnesses:

FRANCIS A. HOPKINS, M. B. ALLSTADT.

